package com.qingcheng.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.alibaba.fastjson.JSON;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qingcheng.dao.SkuMapper;
import com.qingcheng.entity.PageResult;
import com.qingcheng.pojo.goods.Sku;
import com.qingcheng.pojo.order.OrderItem;
import com.qingcheng.service.goods.SkuService;
import com.qingcheng.util.CacheKey;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.MatchQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import tk.mybatis.mapper.entity.Example;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class SkuServiceImpl implements SkuService {

    @Autowired
    private SkuMapper skuMapper;

    @Autowired
    private RestHighLevelClient restHighLevelClient;



    /**
     * 返回全部记录
     *
     * @return
     */
    public List<Sku> findAll() {
        return skuMapper.selectAll();
    }

    /**
     * 分页查询
     *
     * @param page 页码
     * @param size 每页记录数
     * @return 分页结果
     */
    public PageResult<Sku> findPage(int page, int size) {
        PageHelper.startPage(page, size);
        Page<Sku> skus = (Page<Sku>) skuMapper.selectAll();
        return new PageResult<Sku>(skus.getTotal(), skus.getResult());
    }

    /**
     * 条件查询
     *
     * @param searchMap 查询条件
     * @return
     */
    public List<Sku> findList(Map<String, Object> searchMap) {
        Example example = createExample(searchMap);
        return skuMapper.selectByExample(example);
    }

    /**
     * 分页+条件查询
     *
     * @param searchMap
     * @param page
     * @param size
     * @return
     */
    public PageResult<Sku> findPage(Map<String, Object> searchMap, int page, int size) {
        PageHelper.startPage(page, size);
        Example example = createExample(searchMap);
        Page<Sku> skus = (Page<Sku>) skuMapper.selectByExample(example);
        return new PageResult<Sku>(skus.getTotal(), skus.getResult());
    }

    /**
     * 根据Id查询
     *
     * @param id
     * @return
     */
    public Sku findById(String id) {
        return skuMapper.selectByPrimaryKey(id);
    }

    /**
     * 新增
     *
     * @param sku
     */
    public void add(Sku sku) {
        skuMapper.insert(sku);
    }

    /**
     * 修改
     *
     * @param sku
     */
    public void update(Sku sku) {
        skuMapper.updateByPrimaryKeySelective(sku);
    }

    /**
     * 删除
     *
     * @param id
     */
    public void delete(String id) {
        skuMapper.deleteByPrimaryKey(id);
    }

    @Autowired
    private RedisTemplate redisTemplate;
    /**
     * 加载所有价格到缓存
     */
    @Override
    public void saveAllPriceToRedis() {
        //检查缓存是否存在指定价格数据
        if(!redisTemplate.hasKey(CacheKey.SKU_PRICE)){
            //1 查询所有商品
            List<Sku> skuList = skuMapper.selectAll();
            for (Sku sku : skuList) {
                if("1".equals(sku.getStatus())){
                    //2 加入缓存
                    redisTemplate.boundHashOps(CacheKey.SKU_PRICE).put(sku.getId(),sku.getPrice());
                }
            }
        }else {
            System.out.println("缓存中已存在指定价格");
        }

    }

    /**
     * 根据skuId查询价格
     * @param id
     */
    @Override
    public Integer findPriceById(String id) {

        return (Integer) redisTemplate.boundHashOps(CacheKey.SKU_PRICE).get(id);

    }

    /**
     *  保存价格到缓存
     */
    @Override
    public void savePriceToRedisById(String id, Integer price) {
        redisTemplate.boundHashOps(CacheKey.SKU_PRICE).put(id,price);
    }

    /**
     * 根据skuId删除价格
     * @param id
     */
    @Override
    public void deletePriceFromRedis(String id) {
        redisTemplate.boundHashOps(CacheKey.SKU_PRICE).delete(id);
    }

    /**
     * 根据购物车扣减库存
     * @param orderItemList 下单购物车
     * @return 执行结果
     */
    @Override
    public boolean deductionStock(List<OrderItem> orderItemList) {
        //检查是否可以有库存
        boolean idDeduction=true;
        for (OrderItem orderItem : orderItemList) {
            Sku sku = findById(orderItem.getSkuId());

            if (sku==null){
                idDeduction=false;
                break;
            }

            if (!"1".equals(sku.getStatus())){
                idDeduction=false;
                break;
            }
            if (sku.getNum().intValue()<orderItem.getNum().intValue()){
                idDeduction=false;
                break;
            }
        }

        //执行扣存
        if (idDeduction){
            for (OrderItem orderItem : orderItemList) {
                skuMapper.addSaleNum(orderItem.getSkuId(),orderItem.getNum());//增加销量
                skuMapper.deductionStock(orderItem.getSkuId(),orderItem.getNum());//减少库存
            }

        }
        return idDeduction;
    }


    /**
     * 构建查询条件
     *
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String, Object> searchMap) {
        Example example = new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        if (searchMap != null) {
            // 商品id
            if (searchMap.get("id") != null && !"".equals(searchMap.get("id"))) {
                criteria.andLike("id", "%" + searchMap.get("id") + "%");
            }
            // 商品条码
            if (searchMap.get("sn") != null && !"".equals(searchMap.get("sn"))) {
                criteria.andLike("sn", "%" + searchMap.get("sn") + "%");
            }
            // SKU名称
            if (searchMap.get("name") != null && !"".equals(searchMap.get("name"))) {
                criteria.andLike("name", "%" + searchMap.get("name") + "%");
            }
            // 商品图片
            if (searchMap.get("image") != null && !"".equals(searchMap.get("image"))) {
                criteria.andLike("image", "%" + searchMap.get("image") + "%");
            }
            // 商品图片列表
            if (searchMap.get("images") != null && !"".equals(searchMap.get("images"))) {
                criteria.andLike("images", "%" + searchMap.get("images") + "%");
            }
            // SPUID
            if (searchMap.get("spuId") != null && !"".equals(searchMap.get("spuId"))) {
                criteria.andLike("spuId", "%" + searchMap.get("spuId") + "%");
            }
            // 类目名称
            if (searchMap.get("categoryName") != null && !"".equals(searchMap.get("categoryName"))) {
                criteria.andLike("categoryName", "%" + searchMap.get("categoryName") + "%");
            }
            // 品牌名称
            if (searchMap.get("brandName") != null && !"".equals(searchMap.get("brandName"))) {
                criteria.andLike("brandName", "%" + searchMap.get("brandName") + "%");
            }
            // 规格
            if (searchMap.get("spec") != null && !"".equals(searchMap.get("spec"))) {
                criteria.andLike("spec", "%" + searchMap.get("spec") + "%");
            }
            // 商品状态 1-正常，2-下架，3-删除
            if (searchMap.get("status") != null && !"".equals(searchMap.get("status"))) {
                criteria.andLike("status", "%" + searchMap.get("status") + "%");
            }

            // 价格（分）
            if (searchMap.get("price") != null) {
                criteria.andEqualTo("price", searchMap.get("price"));
            }
            // 库存数量
            if (searchMap.get("num") != null) {
                criteria.andEqualTo("num", searchMap.get("num"));
            }
            // 库存预警数量
            if (searchMap.get("alertNum") != null) {
                criteria.andEqualTo("alertNum", searchMap.get("alertNum"));
            }
            // 重量（克）
            if (searchMap.get("weight") != null) {
                criteria.andEqualTo("weight", searchMap.get("weight"));
            }
            // 类目ID
            if (searchMap.get("categoryId") != null) {
                criteria.andEqualTo("categoryId", searchMap.get("categoryId"));
            }
            // 销量
            if (searchMap.get("saleNum") != null) {
                criteria.andEqualTo("saleNum", searchMap.get("saleNum"));
            }
            // 评论数
            if (searchMap.get("commentNum") != null) {
                criteria.andEqualTo("commentNum", searchMap.get("commentNum"));
            }

        }
        return example;
    }

}
